EP 0056901 B1 19850508 - PREPARATION OF FLUIDIZABLE VANADIUM PHOSPHORUS OXIDE CATALYSTS AND USE THEREOF IN PRODUCTION OF MALEIC ANHYDRIDE
Title (en)
PREPARATION OF FLUIDIZABLE VANADIUM PHOSPHORUS OXIDE CATALYSTS AND USE THEREOF IN PRODUCTION OF MALEIC ANHYDRIDE
Publication
Application
Priority
US 22062480 A 19801229
Abstract (en)
[origin: US4317778A] A process is provided for preparing fluid bed catalysts containing the mixed oxides of vanadium and phosphorus prepared from a mixed phosphoric acid source. A pentavalent vanadium compound is introduced into an organic liquid capable of reducing the vanadium, the vanadium is contacted with the mixed phosphoric acid source, the resulting catalyst precursor is comminuted, introduced into water to form an aqueous slurry and spray dried to form microspheroidal, fluidizable particles.
IPC 1-7
IPC 8 full level
C07D 307/60 (2006.01); B01J 27/18 (2006.01); B01J 27/198 (2006.01); C01B 25/37 (2006.01); C01B 25/45 (2006.01); C07B 61/00 (2006.01); C07C 51/215 (2006.01); C07C 51/25 (2006.01)
CPC (source: EP KR US)
B01J 23/002 (2013.01 - EP US); B01J 23/22 (2013.01 - KR); B01J 27/18 (2013.01 - KR); B01J 27/198 (2013.01 - EP US); C07C 51/215 (2013.01 - EP US); C07C 51/25 (2013.01 - EP KR US); C07C 51/252 (2013.01 - EP US); C07D 307/60 (2013.01 - KR); B01J 2523/00 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
US 4317778 A 19820302; BR 8108412 A 19821013; CA 1172234 A 19840807; DE 3170443 D1 19850613; EP 0056901 A2 19820804; EP 0056901 A3 19820908; EP 0056901 B1 19850508; ES 515994 A0 19831101; ES 8400740 A1 19831101; ES 8800071 A1 19850301; JP H0297 B2 19900105; JP S57132550 A 19820816; KR 830007132 A 19831014; KR 880001212 B1 19880711; MX 159330 A 19890517; PT 74206 A 19820101; PT 74206 B 19830714
DOCDB simple family (application)
US 22062480 A 19801229; BR 8108412 A 19811228; CA 388377 A 19811020; DE 3170443 T 19811215; EP 81305882 A 19811215; ES 507286 A 19811119; ES 515994 A 19820928; JP 20332681 A 19811216; KR 810005270 A 19811228; MX 19027181 A 19811125; PT 7420681 A 19811228